Vacuum conveying velocity control apparatus and method for...

B - Operations – Transporting – 01 – J

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B01J 8/00 (2006.01) B65G 53/24 (2006.01) B65G 53/58 (2006.01) B65G 53/60 (2006.01) B65G 53/66 (2006.01)

Patent

CA 2629945

An apparatus and a method for controlling the velocity of a particulate material conveyed by a gas flow under negative pressure in a duct said device comprising means for separating the flow into first and second streams. The first stream has a relatively high particulate material content and the second stream has a relatively low particulate material content. The flow of the second stream is restricted for example by a flow restricting or constricting orifice or valve. The duct diameter may increase incrementally along its length.

L~invention concerne un appareil et un procédé de modulation de la vitesse d~une matière particulaire acheminée par un écoulement gazeux sous pression négative dans un conduit. L~appareil comprend un moyen de séparation de l~écoulement en des premier et deuxième flux. Le premier flux possède une teneur en matière particulaire relativement élevée et le deuxième flux possède une teneur en matière particulaire relativement faible. L~écoulement du deuxième flux est limité par un orifice ou une valve de limitation ou d~étranglement d~écoulement. Le conduit peut présenter un diamètre qui augmente progressivement dans le sens de sa longueur.

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